.content{
    width: 100px;
    margin: 0px auto;
}

#list{
    width: 1400px;
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    flex-wrap: wrap;
}

.item{
    width: 400px;
    height: 400px;
    margin: 10px;
    padding: 10px;
    border: 4px solid #aaa;
    border-radius: 20px;
}

.item img{
    width: 300px;
    height: 300px;
}
